One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,8)(5,6)(9,10)(11,15)(12,13)(14,16)(18,23)(19,27)(20,21)(24,29)(25,26)(28,30) involution — undirected(2,6)(7,8)(9,10)(11,14)(12,13)(15,16)(18,23)(19,28)(20,21)(25,26)(27,30)(31,32) involution — undirected(1,3,5,4)(2,7,6,8)(10,13)(14,15)(17,18,20,23,22,25,21,26)(19,29,27,32,30,24,28,31)(9,11,12,16)(10,14,13,15)(17,19,21,28,22,30,20,27)(18,24,26,32,25,29,23,31)(1,4,5,3)(2,7,6,8)(18,25)(23,26)(24,29)(31,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.